Me encontré un enlace oficial y actualizado a la lista de dominios de primer nivel de la IANA (la Internet Assigned Numbers Authority, que se encarga de estas cosas). Allí se indican esos dominios «extra» que se inventaron además de los de los países (.es, .pt, .ft, etcétera) y los genéricos de toda la vida (.com, .net, etcétera), lo que hizo que empezaran a aparecer otros nuevos y originales con denominaciones interesantes, además de –ya puestos– las marcas comerciales.
Tal vez nunca te hayas topado con uno o no te hayas fijado por dónde navegabas: funcionan exactamente igual que los normales y también se les pueden asignar direcciones de correo como a los de toda la vida.
Echarle un vistazo es realmente interesante, porque los hay a cual más curioso:
aaa, aarp, abb, abbott, abbvie, abc, able, abogado, abudhabi, ac, academy, accenture, accountant, accountants, aco, actor, ad, ads, adult, ae, aeg, aero, aetna, af, afl, africa, ag, agakhan, agency, ai, aig, airbus, airforce, airtel, akdn, al, alibaba, alipay, allfinanz, allstate, ally, alsace, alstom, am, amazon, americanexpress, americanfamily, amex, amfam, amica, amsterdam, analytics, android, anquan, anz, ao, aol, apartments, app, apple, aq, aquarelle, ar, arab, aramco, archi, army, arpa, art, arte, as, asda, asia, associates, at, athleta, attorney, au, auction, audi, audible, audio, auspost, author, auto, autos, aw, aws, ax, axa, az, azure, ba, baby, baidu, banamex, band, bank, bar, barcelona, barclaycard, barclays, barefoot, bargains, baseball, basketball, bauhaus, bayern, bb, bbc, bbt, bbva, bcg, bcn, bd, be, beats, beauty, beer, bentley, berlin, best, bestbuy, bet, bf, bg, bh, bharti, bi, bible, bid, bike, bing, bingo, bio, biz, bj, black, blackfriday, blockbuster, blog, bloomberg, blue, bm, bms, bmw, bn, bnpparibas, bo, boats, boehringer, bofa, bom, bond, boo, book, booking, bosch, bostik, boston, bot, boutique, box, br, bradesco, bridgestone, broadway, broker, brother, brussels, bs, bt, build, builders, business, buy, buzz, bv, bw, by, bz, bzh, ca, cab, cafe, cal, call, calvinklein, cam, camera, camp, canon, capetown, capital, capitalone, car, caravan, cards, care, career, careers, cars, casa, case, cash, casino, cat, catering, catholic, cba, cbn, cbre, cc, cd, center, ceo, cern, cf, cfa, cfd, cg, ch, chanel, channel, charity, chase, chat, cheap, chintai, christmas, chrome, church, ci, cipriani, circle, cisco, citadel, citi, citic, city, ck, cl, claims, cleaning, click, clinic, clinique, clothing, cloud, club, clubmed, cm, cn, co, coach, codes, coffee, college, cologne, com, commbank, community, company, compare, computer, comsec, condos, construction, consulting, contact, contractors, cooking, cool, coop, corsica, country, coupon, coupons, courses, cpa, cr, credit, creditcard, creditunion, cricket, crown, crs, cruise, cruises, cu, cuisinella, cv, cw, cx, cy, cymru, cyou, cz, dad, dance, data, date, dating, datsun, day, dclk, dds, de, deal, dealer, deals, degree, delivery, dell, deloitte, delta, democrat, dental, dentist, desi, design, dev, dhl, diamonds, diet, digital, direct, directory, discount, discover, dish, diy, dj, dk, dm, dnp, do, docs, doctor, dog, domains, dot, download, drive, dtv, dubai, dunlop, dupont, durban, dvag, dvr, dz, earth, eat, ec, eco, edeka, edu, education, ee, eg, email, emerck, energy, engineer, engineering, enterprises, epson, equipment, er, ericsson, erni, es, esq, estate, et, eu, eurovision, eus, events, exchange, expert, exposed, express, extraspace, fage, fail, fairwinds, faith, family, fan, fans, farm, farmers, fashion, fast, fedex, feedback, ferrari, ferrero, fi, fidelity, fido, film, final, finance, financial, fire, firestone, firmdale, fish, fishing, fit, fitness, fj, fk, flickr, flights, flir, florist, flowers, fly, fm, fo, foo, food, football, ford, forex, forsale, forum, foundation, fox, fr, free, fresenius, frl, frogans, frontier, ftr, fujitsu, fun, fund, furniture, futbol, fyi, ga, gal, gallery, gallo, gallup, game, games, gap, garden, gay, gb, gbiz, gd, gdn, ge, gea, gent, genting, george, gf, gg, ggee, gh, gi, gift, gifts, gives, giving, gl, glass, gle, global, globo, gm, gmail, gmbh, gmo, gmx, gn, godaddy, gold, goldpoint, golf, goo, goodyear, goog, google, gop, got, gov, gp, gq, gr, grainger, graphics, gratis, green, gripe, grocery, group, gs, gt, gu, gucci, guge, guide, guitars, guru, gw, gy, hair, hamburg, hangout, haus, hbo, hdfc, hdfcbank, health, healthcare, help, helsinki, here, hermes, hiphop, hisamitsu, hitachi, hiv, hk, hkt, hm, hn, hockey, holdings, holiday, homedepot, homegoods, homes, homesense, honda, horse, hospital, host, hosting, hot, hotels, hotmail, house, how, hr, hsbc, ht, hu, hughes, hyatt, hyundai, ibm, icbc, ice, icu, id, ie, ieee, ifm, ikano, il, im, imamat, imdb, immo, immobilien, in, inc, industries, infiniti, info, ing, ink, institute, insurance, insure, int, international, intuit, investments, io, ipiranga, iq, ir, irish, is, ismaili, ist, istanbul, it, itau, itv, jaguar, java, jcb, je, jeep, jetzt, jewelry, jio, jll, jm, jmp, jnj, jo, jobs, joburg, jot, joy, jp, jpmorgan, jprs, juegos, juniper, kaufen, kddi, ke, kerryhotels, kerrylogistics, kerryproperties, kfh, kg, kh, ki, kia, kids, kim, kindle, kitchen, kiwi, km, kn, koeln, komatsu, kosher, kp, kpmg, kpn, kr, krd, kred, kuokgroup, kw, ky, kyoto, kz, la, lacaixa, lamborghini, lamer, lancaster, land, landrover, lanxess, lasalle, lat, latino, latrobe, law, lawyer, lb, lc, lds, lease, leclerc, lefrak, legal, lego, lexus, lgbt, li, lidl, life, lifeinsurance, lifestyle, lighting, like, lilly, limited, limo, lincoln, link, lipsy, live, living, lk, llc, llp, loan, loans, locker, locus, lol, london, lotte, lotto, love, lpl, lplfinancial, lr, ls, lt, ltd, ltda, lu, lundbeck, luxe, luxury, lv, ly, ma, madrid, maif, maison, makeup, man, management, mango, map, market, marketing, markets, marriott, marshalls, mattel, mba, mc, mckinsey, md, me, med, media, meet, melbourne, meme, memorial, men, menu, merckmsd, mg, mh, miami, microsoft, mil, mini, mint, mit, mitsubishi, mk, ml, mlb, mls, mm, mma, mn, mo, mobi, mobile, moda, moe, moi, mom, monash, money, monster, mormon, mortgage, moscow, moto, motorcycles, mov, movie, mp, mq, mr, ms, msd, mt, mtn, mtr, mu, museum, music, mv, mw, mx, my, mz, na, nab, nagoya, name, navy, nba, nc, ne, nec, net, netbank, netflix, network, neustar, new, news, next, nextdirect, nexus, nf, nfl, ng, ngo, nhk, ni, nico, nike, nikon, ninja, nissan, nissay, nl, no, nokia, norton, now, nowruz, nowtv, np, nr, nra, nrw, ntt, nu, nyc, nz, obi, observer, office, okinawa, olayan, olayangroup, ollo, om, omega, one, ong, onl, online, ooo, open, oracle, orange, org, organic, origins, osaka, otsuka, ott, ovh, pa, page, panasonic, paris, pars, partners, parts, party, pay, pccw, pe, pet, pf, pfizer, pg, ph, pharmacy, phd, philips, phone, photo, photography, photos, physio, pics, pictet, pictures, pid, pin, ping, pink, pioneer, pizza, pk, pl, place, play, playstation, plumbing, plus, pm, pn, pnc, pohl, poker, politie, porn, post, pr, pramerica, praxi, press, prime, pro, prod, productions, prof, progressive, promo, properties, property, protection, pru, prudential, ps, pt, pub, pw, pwc, py, qa, qpon, quebec, quest, racing, radio, re, read, realestate, realtor, realty, recipes, red, redstone, redumbrella, rehab, reise, reisen, reit, reliance, ren, rent, rentals, repair, report, republican, rest, restaurant, review, reviews, rexroth, rich, richardli, ricoh, ril, rio, rip, ro, rocks, rodeo, rogers, room, rs, rsvp, ru, rugby, ruhr, run, rw, rwe, ryukyu, sa, saarland, safe, safety, sakura, sale, salon, samsclub, samsung, sandvik, sandvikcoromant, sanofi, sap, sarl, sas, save, saxo, sb, sbi, sbs, sc, scb, schaeffler, schmidt, scholarships, school, schule, schwarz, science, scot, sd, se, search, seat, secure, security, seek, select, sener, services, seven, sew, sex, sexy, sfr, sg, sh, shangrila, sharp, shell, shia, shiksha, shoes, shop, shopping, shouji, show, si, silk, sina, singles, site, sj, sk, ski, skin, sky, skype, sl, sling, sm, smart, smile, sn, sncf, so, soccer, social, softbank, software, sohu, solar, solutions, song, sony, soy, spa, space, sport, spot, sr, srl, ss, st, stada, staples, star, statebank, statefarm, stc, stcgroup, stockholm, storage, store, stream, studio, study, style, su, sucks, supplies, supply, support, surf, surgery, suzuki, sv, swatch, swiss, sx, sy, sydney, systems, sz, tab, taipei, talk, taobao, target, tatamotors, tatar, tattoo, tax, taxi, tc, tci, td, tdk, team, tech, technology, tel, temasek, tennis, teva, tf, tg, th, thd, theater, theatre, tiaa, tickets, tienda, tips, tires, tirol, tj, tjmaxx, tjx, tk, tkmaxx, tl, tm, tmall, tn, to, today, tokyo, tools, top, toray, toshiba, total, tours, town, toyota, toys, tr, trade, trading, training, travel, travelers, travelersinsurance, trust, trv, tt, tube, tui, tunes, tushu, tv, tvs, tw, tz, ua, ubank, ubs, ug, uk, unicom, university, uno, uol, ups, us, uy, uz, va, vacations, vana, vanguard, vc, ve, vegas, ventures, verisign, versicherung, vet, vg, vi, viajes, video, vig, viking, villas, vin, vip, virgin, visa, vision, viva, vivo, vlaanderen, vn, vodka, volvo, vote, voting, voto, voyage, vu, wales, walmart, walter, wang, wanggou, watch, watches, weather, weatherchannel, webcam, weber, website, wed, wedding, weibo, weir, wf, whoswho, wien, wiki, williamhill, win, windows, wine, winners, wme, wolterskluwer, woodside, work, works, world, wow, ws, wtc, wtf, xbox, xerox, xihuan, xin, xn-- (…), xxx, xyz, yachts, yahoo, yamaxun, yandex, ye, yodobashi, yoga, yokohama, you, youtube, yt, yun, za, zappos, zara, zero, zip, zm, zone, zuerich, zw.
Para empezar, hay muchos que empiezan por XN-- que se corresponden con palabras que incluyen caracteres especiales: la ñ, o de idiomas como el árabe o el hindi. Ese código se conoce como Punycode y proviene del RFC3492, que convierte Unicode a caracteres válidos en esos dominios.
Luego están otros como .gal y .eus para Galicia y Euskadi, pero no en cambio otros que se solicitaron en su día como .telefonica o .terra (d.e.p.) En cambio .zara, que se pidió en esa época (2010s) sí que está. Se decía que esos dominios costaban más de 25.000 dólares al año y unos 185.000 cuando se solicitaban por primera vez.
¿Qué otras marcas están por ahí presentes? Alibaba, Airtel, AmericanExpress, Apple, Barcalys, Bloomberg, Cisco, Epson, Ericsson, Ferrari, Ferrero, Gallo, Google, IBM, LaCaixa, Lamborghini, Jaguar, Mango, Omega, Panasonic, Philips, Yahoo, Walmart, Windows y Zara… así a simple vista. También hay genéricos como .adult, .business, .date, .earth, .energy, .global, .holiday, .map, .movie, .security o .viajes (el único que he visto en español). El hecho de que sitios como Iberia.viajes no lleven a Iberia ya dice mucho de lo que se puede esperar de algunos de estos dominios, para sorpresa de nadie.
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